California house built for top effiency

It began as a one-of-a-kind house, a partnership between the Sacramento Municipal Utility District and a Folsom home builder, to test the newest green-building techniques.

It turned into one of the greenest, most energy-efficient homes built in the United States.

Tuesday, SMUD announced that a new 1,940-square-foot Mormon Street House near Folsom's historic downtown received a Leadership in Energy and Environmental Design (LEED) Platinum designation from the U.S. Green Building Council in Washington, the highest honor in energy-efficient home building. The honor comes weeks after industry flagship Green Builder Magazine picked the Folsom house above 56 others for its December cover, dubbing it 2008's "Green Home of the Year."